2 COOLANT TEMPERATURE SENSORS?

2004 MERCURY MARAUDER
87,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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TRUCKWES
  • MEMBER
  • 35 POSTS
crossover coolant pipe has two temperature sensors. one on the left one on the right. switch one is for temp gauge? the temp gauge is not reading right. car is not overheating. gauge is luxuriating. dohc 4.6l. 32 valves.
Dec 3, 2025 at 4:50 PM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
If the service info is correct the sensor for the gauge is the one on the left side with a Pink w/orange and Red w/white wires going to it. They both talk to the PCM but the first one tells the dash the temp, the other one near injector 1 controls the fans.
Dec 4, 2025 at 12:17 AM
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